Remove third_party/golang.org/x/mobile as it is no longer used with Go 1.5.

third_party/go/src/golang.org/x/mobile/app/darwin_arm.m

Index: third_party/go/src/golang.org/x/mobile/app/darwin_arm.m
diff --git a/third_party/go/src/golang.org/x/mobile/app/darwin_arm.m b/third_party/go/src/golang.org/x/mobile/app/darwin_arm.m
deleted file mode 100644
index 5a2f52e86e5adcaa40c50f4c1b6eba3647236683..0000000000000000000000000000000000000000
--- a/third_party/go/src/golang.org/x/mobile/app/darwin_arm.m
+++ /dev/null
@@ -1,78 +0,0 @@
-// Copyright 2015 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build darwin
-
-#include "_cgo_export.h"
-#include <pthread.h>
-#include <stdio.h>
-#include <sys/utsname.h>
-
-#import <UIKit/UIKit.h>
-#import <GLKit/GLKit.h>
-
-struct utsname sysInfo;
-
-@interface AppController : GLKViewController
-@end
-
-@interface AppDelegate : UIResponder<UIApplicationDelegate>
-@property (strong, nonatomic) UIWindow *window;
-@property (strong, nonatomic) AppController *controller;
-@end
-
-@implementation AppDelegate
-- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
-	self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
-	self.controller = [[AppController alloc] initWithNibName:nil bundle:nil];
-	self.window.rootViewController = self.controller;
-	[self.window makeKeyAndVisible];
-	return YES;
-}
-@end
-
-@interface AppController ()
-@property (strong, nonatomic) EAGLContext *context;
-@end
-
-@implementation AppController
-- (void)viewDidLoad {
-	[super viewDidLoad];
-	self.context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
-	GLKView *view = (GLKView *)self.view;
-	view.context = self.context;
-	view.drawableDepthFormat = GLKViewDrawableDepthFormat24;
-
-	// TODO(crawshaw): set correct geometry.
-	//CGRect bounds = view.bounds;
-	//view.contentScaleFactor;
-	setGeom(300, 300);
-}
-- (void)update {
-	NSLog(@"AppController update");
-	drawgl((GoUintptr)self.context);
-}
-@end
-
-void runApp(void) {
-	@autoreleasepool {
-		UIApplicationMain(0, nil, nil, NSStringFromClass([AppDelegate class]));
-	}
-}
-
-void setContext(void* context) {
-	EAGLContext* ctx = (EAGLContext*)context;
-	if (![EAGLContext setCurrentContext:ctx]) {
-		// TODO(crawshaw): determine how terrible this is. Exit?
-		NSLog(@"failed to set current context");
-	}
-}
-
-uint64_t threadID() {
-	uint64_t id;
-	if (pthread_threadid_np(pthread_self(), &id)) {
-		abort();
-	}
-	return id;
-}